Duplex envelop



1. s. CMN-Lx,

DUPLEX ENvELoP.

APPLICATION FILED AUGJI, i919.

Patented June 14,

UNITED s'm'rlasV PATENT OFFICE.

Vshipped in a suitable envelop having attac ed thereto a second envelop.adapted to receive first-class mail, such for lnstance, as the invoiceor letter accompanying the goods.

A further object of my invention is to make such an envelop, whlch is soarranged that the entire envelop may be formed from a single blank witha minimum number'of processes.

A further object of my invention is to provide an envelop of the typedescribed, havin fastening devices mounted thereon, where y the goods inthe merchandise or catalogue portion of the envelop may be attached tothe letter holding portion of the envelop in such a way that even thougha portion of the former part ofthe envelop becomes torn then thefastening device will keep-the two parts together.

With these and other objects in View my invention consists in theconstruction, arrangement and combination of the various parts'of thedevice, whereby the objects contemplated are attained, as hereinaftermore fully set forth, pointed out in my claims, and illustrated in theaccompanying drawings, in which:

Figure 1 shows a top or plan view of the blank from which my envelop ismade.

Fig. 2 shows a top or plan view of the envelop after it has been foldedand the fiaps sealed, so that it is ready to receive merchandise orcatalogues and a letter or invoice.

Fig. 3 shows a plan view of the envelop after the envelop has beenfolded as it would be after the appropriate articles have been placedtherein, ;and also "illustrating the manner of holding the merchandiseor catL alogue therein from .becoming separated from the envelop.

Fig. 4 shows a longitudinal, enlarged, sectional view taken Von the line4 4 of Fig. 3; and

Specification of Letters Patent. lApplication mea August 1'1, 1919.serial No. 316,896.

Patented June 14, 1921.

Fig. 5 shows an enlarged, detail, sectional view of the fasteningdevice.

Referring to the. accompanying drawings, I have `used the referencenumeral A to indicate generally; the blank from which my improved duplexenvelop is formed.

The` original blank is substantially rectangular in shape, and isindicated by the dotted linesl 10. The blank in its rectangular form isrun through suitable dies or cutting devices, whereby the flaps 11, 12and 13 are formed and at the same time an arcuate cut 14 may be made atone end of the blank.

The same or different processes may also form creases 15, 16 17 land 18and the creases 19 and 20'.' v

It will beunderstood that the creases 15 to 18 inclusi-ve areintended-to indicate and 'foutline the folds forming theedges of theenvelop, whilev the creases 19 and 20 form the ends of the envelop.

, lVhen the blank has been formed with the aps and creases described, itwill be seen that it is divided into four sections, namely B777 0,77 D77E.

In order to form a catalogue holding enfvelop, the section E is foldedon the crease 18 over onto the Section D and the 13 are folded upon thecreases 20 to lap over the side edges of the portion 141, 'so that whensuitable gum is applied to the under surface of the fiaps y13, they mayhe sealed against the portion E to form an envelop openat the top.

In this connection, it will be lnoted that the arcuate cut 14 is at thetop or receivling end of the envelop, it being formed for holdingportions of the envelop, the portion B is folded on the crease 16 overonto the portion C -and the fiaps 12 are turned on the creases 19 overthe side edges of the portion B and suitable gum applied to seal thelower surface of the iaps against the upper outer edges of the portlonB.

v The flap 11 is gummed on what would be the upper surface of the blankA in the position shown in Fig. l and it will be seen that when theportion B is folded over the portion 0, then 'the gum vsurface of theflap 11 will be disposedl adjacent to the edge 14 of the portion E Ipreferably form a sealingl or tying device for my envelop, vwhich may bein the am aiuaaaa in rig. 5. n as am or other flexible device 24 is tiedaround the eyelet 21, the string being of such length that it may bedrawn around the envelop along lines parallel with the transverse andlongitudinal axes thereof.

In the portion A, a secondL eyelet 25 is let into the portion inposition to substantially register with the eyelet 21 whenv the envelopis folded into position shown in the F igs.'. and 4, and the eyelet 25carries the spaced washers 26.

In the practical operation of my improved device, the blank is formed asis illustrated by the full lines in F ig. 1 with the creases heretoforementioned therein, and then the portions B and C and D and E are foldedtogether to form the letter or invoice receiving envelop and thecatalogue or merchandise receiving envelop, so that the parts willassume substantially the position shown in Fig. 2.

The flap 11 may then be raised to slip in the letter or invoice into theletter receiving portion of the envelop and the curved end 14 may beraised to permit merchandise or catalogues to be slipped into theappropriate portion of the envelop.

The gum iiap 11 is then moistened and the lap inserted under the curvedend of the portion E, and the device is then folded upon the creases 15and 17'to assume substantially the position shown in Fig. 3.

The finger may be run along the end of the portion l or the device maybe grasped after being folded `to the position shown in Fig. 4, and thefingers run alon the outtitl side of theA portionsd and C insure thatthe gum on the flap 11 has properly sealed against the portion tD.

Suitable reference or indicating characters may be placed upon theportion C adjacent to the crease l? to indicate to the recipient of theenveiop the manner of opening same, which may be accomplished byinserting a knife between the flap 11 and the portion B and cuttingacross the envelop, which will sever the blank along the creases 15 and17, thereby separating iirst and second class enveiops andsimultaneously opening both. of them, 'so the contents thereof may beoved.

'It wilt be not on i ien the iat-- es it easier voice vcompartment andthe merchandise compartment together, comprising the flexible device 24,which may be extended around the envelop along its longitudinal axis andthen wound around between the Washers 22'and 23 so that the compartmentsmay be held from movement relative to each other and the merchandisecompartment sealed.

It may also be desirable to formthe fiexible device 24, so that it is ofsufficient length to extend around the envelops, both along theirlongitudinal axes and along their transverse axes, in which case theflexible device is also looped around the eyelet 25 on the bottom of theenvelop, so that the string will not' slip off `from the corners of theenvelop, or otherwise become displaced.

Other forms of fastening devices, which accomplish the same result, maybe also used, but it isto be noted that Where the string fasteningdevice is used, then even though the merchandise' compartment becomestorn, the string will prevent the separation of the merchandise from theremaining portion of the envelop.

Some changes may be made in the construction and arrangement of myimproved device without departing from the real purpose and spirit of myinvention, and it is my intention to cover by my claims any modied formsof structure or use of mechanical equivalents, which may be reasonablyincluded within their scope.

I claim as my invention:

1. In a device of the class described, an envelop formed from a singleblank by folding the ends of the blank upon the central portions tothereby form independent compartments, sealing aps adapted to close theends of said compartments and a flap formed at one end of said blankadapted to extend past the line upon which said compartments are folded,when one is swung over to position where it is superimposed upon theother.

2. In a device of the class described, an envelop formed from a singleblank by folding the ends of the blank upon the central portions tothereby form independent compartments, sealing naps adapted to close theends of said compartments and a flap formed at one end of said blankadapted to extend past the line upon which said com partments arefolded, when one is swung overto position where it is superimposed uponthe other, said iiap having a gununed portion adapted to engage thematerial of the blank adjacent to its central portion,

whereby when the compartments folded 3i. f;

upon themselves, a cut made aio fg the fold may simultaneousiy openicc-tn compartments.

